Sn-decorated CeO_(2) with different morphologies for direct dehydrogenation of ethylbenzene

作     者：Kai Zhang Guoju Cui Mengzhen Yuan Huiwen Huang Ning Li Jiale Xu Guowei Wang Chunyi Li Kai Zhang;Guoju Cui;Mengzhen Yuan;Huiwen Huang;Ning Li;Jiale Xu;Guowei Wang;Chunyi Li

作者机构：State Key Laboratory of Heavy Oil ProcessingChina University of Petroleum(East China)Qingdao266580China Petrochemical Plant of Sinopec Shengli Oilfield CompanyDongying257237China College of Chemical and Biological EngineeringShandong University of Science and TechnologyQingdao266590China 

出 版 物：《Journal of Rare Earths》 (稀土学报（英文版）)

年 卷 期：2024年第42卷第1期

页      面：102-109,I0004页

核心收录：

学科分类：081702[工学-化学工艺] 081705[工学-工业催化] 08[工学] 0817[工学-化学工程与技术] 080502[工学-材料学] 0805[工学-材料科学与工程（可授工学、理学学位）] 

基　　金：Project supported by the National Natural Science Foundation of China(22178390) the Fundamental Research Funds for the Central Universities(18CX02016A) 

主　　题：Ethylbenzene dehydrogenation CeO_(2) Sn Morphology Oxygen vacancy Rare earths 

摘      要：Three Sn-decorated ceria catalysts with various morphologies(rods,particles,and cubes)were prepared and applied to the direct dehydrogenation of ***-technology characterizations,including X-ray photoelectro n spectroscopy(XPS),H_(2)-tempe rature programmed reduction(H_(2)-TPR),and Raman spectroscopy,prove that the oxygen vacancies are the active sites for ethylbenzene dehydrogenation,which can be regulated by engineering CeO_(2) morphology and enhanced via introducing metal *** the results of activity test,the catalytic activities for ethylbenzene dehydrogenation over different samples are closely dependent on the amount of oxygen *** reduced Sn-decorated CeO_(2) catalyst with nanoparticles morphology exhibits better dehydrogenation performance than the other two studied catalysts at 600℃.This work provides an effective approach to regulate the active oxygen vacancies and further enhance the dehydrogenation activities through engineering the surface morphology of the catalyst and introducing suitable additives.